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  • Title: Clopenthixol decanoate in schizophrenia.
    Author: Carney MW, Rutherford P.
    Journal: Curr Med Res Opin; 1981; 7(4):205-11. PubMed ID: 6112116.
    Abstract:
    Clopenthixol decanoate was given to 20 chronic schizophrenic patients for 11 months in doses ranging from 100 mg initially up to 1000 mg 3-weekly subsequently, according to clinical response and the occurrence of adverse effects. A further 3 patients received the depot injections for periods of 6 to 9 months. Improvement in individual symptoms was rated on a 4-point scale. Unwanted effects were recorded on a checklist and routine biochemical and haematological tests were carried out at the beginning and end of the treatment period. There were highly significant improvements in the mean overall symptom score and in the 5 single symptom scores (hallucinations, delusions, depression, aggressive behaviour and non-aggressive behaviour disturbance). The 2 'negative' symptoms of apathy and social withdrawal showed improvement up to 16 weeks but not at 11 months. The incidence of depression was less at the end of the study than at the time fo entry. Three patients stopped the drug after the sixth month because of extrapyramidal symptoms (2) or drowsiness (1). Three others developed severe extra-pyramidal side-effects. Unwanted effects, though recorded in 70% of patients--drowsiness and extrapyramidal symptoms were the commonest--were for the most part trivial, and were fewer and less severe than they were on entry to the study. There was no evidence of toxicity. It was considered that on the basis of this experience the drug was an effective, safe antipsychotic agent, warranting more extensive clinical trial.
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